It is the same in the UK.

But because we have a smart meter, our energy price can change every 30 minutes. So if our provider predicts that tomorrow lunchtime will be expensive for electricity, it could charge us more. Or it could tell the battery to take over.

The drive itself will work with any processor. If all you have is data on there, it will work.

Or do you mean you want to swap the drive which has the operating system on it?

Are there any UK-specific communities?